Driven member for friction clutches



Oct. 19, 1937. M. KATCHER DRIVEN MEMBER FOR FRICTION CLUTCHES Filed May 21, 1937 30 lNvENToR Ver 'SBZ/Cher ATTORNEY Patented Oct. 19, 1937 DRIVEN MEMBER Foa Falc'rloN cLU'rcnEs Morris Kutcher, New York, N. Y.v Application May 21, 1937, serial No. 144,071 15 claims. (c1. 19a-'101) This invention relates to a driven member for which 4give rise to spokes I2. .Spokes I2 are in friction clutches of the kind wherein the driven two sets, the spokes of a set alternating with member is interposed between two parts of a A those of the other set. The spokes of a set are driving member and is adapted to be gripped in substantially axialalignment with eachother 5 or clamped by the parts under sufficient pressure but out of axial alignment with the spokes of 5 to impart motion from the driving member to the other set. In-Fig. 3, one spoke I2 is shown the driven member. The invention is particuup and the adjacent one down. Friction facing larly desirable in a friction clutch for automo- I4 is fastened to the top or outer face of up biles. l spokes I 2 by means of rivets I6, while friction An object of this invention is to provide means facing I5 is fastened to the bottom orl outer face 10 which shall be suiciently yieldable to effect of down spokes I2 by means-of'rivets I'l. 'I'he Vgradually the friction grip between the parts of facings are fastened to their `corresponding spokes the driving member and the friction facings of by two rivets at each spoke and are held away the ydriven member. This is effected, as in my from the spokes to which they are not fastened UNITED-STATES PATENT. OFFICE co-pending application, Serial No. 109,644, by by the wavy legs of hair-pin Vsprings I8. Each 15V mounting the friction. facings on the driven spring I8 is held in position on plate I0 by having member with springs behind the facings which its head pass through oblong openings I9 in said normally keep them away from the faces of said plate. One leg 0f Spring I8 iS flat; While its thel member. For increasing the gradual taking leg is substantially wavy shaped. Springs I8 are hold, in one form of my device, the driven memso placed in openings I8, that the at leg of each 20` ber is further-constructed with two sets of spokes spring is o'n the inner face of a spoke I2, vwhichwhlch are out of axial alignment with each results in having the flat legs of successive springs-4 other, and fastening the friction facings each to alternately on top and on bottom of plate III.y one set of the spokes whilethe springs normally Friction facings I4 and l5 are provided with rekeep them away from the other set. In another cesses 20 on their inside to accommodate the flat 25V form, the friction member comprises a flat plate legs 0f springs I8. Said facings are also DIOVCledv Without any spokes and in still another form on their inside with'deeper recesses 2| alternatthere are spokes but they are inthe same plane. ing With leCeSSeS 20, t0 accommodate' 'the y"ilmvl Other objects and advantages will become aplegs of said springs. parent upon a further study of the description Spring'l in Fig. 2 has the free @11d 0f its WaVY 30 and drawing, in whichzleg against plate I0. -In Fig. 4 another type of Fig. 1 is an elevation of one side of the fricspring is shown a's indicated by the numeral 22. tion clutch` member with some of the4 springs Springs 22 are mounted on plate I0 in thefsame and portions of the friction facings omitted. manner aS Springs I8. The free end of the wavy.

A Fig. 2 is a fragmental section to an enlarged leg of spring 22, however i s laway from plate I0. 35 scale taken along the line 2-2 of Fig. 1. In case a spring 22 should break, ythe free end of Fig. 3 is a fragmental section to an enlarged its wavy leg Wouldtend t0 engage Shoulder 23 0f scale taken along the line 3 3 of Fig. 1. recess 2| and help prevent the broken part of Fig. 4 is a section taken similarly to Fig. 2 but the spring from falling out.

showing an alternative form of spring. In Figs. 5, 6, and '7, plate 21, which is the equiva- 4o Fig. 5 is a partial elevation of the plate memlent of plate I0, Figs. 1, is flat and has no spokes. ber showing an alternative form in which th Rivets 24 are in pairs, the rivets of a pair being plate member is without spokes. located along a radial' line. The pairs of rivets Fig. 6 is a fragmental section taken along the are. relatively widely spaced from each other, to

line 6-6 of Fig. 5.

' Fig. 7 is a fragmental section taken along out suiciently the friction facings 26 from plate the line -11 of Fig. 5. 21. Rivets 24 grip both facings 26, holding them n Fig. 8 is a partial elevation of the plate memto plate 21. .Springs 25 have each .two wavy ber showing an alternative form in which the shaped legs, so that both friction facings 28. at 5o plate member has'spokes which are in the same 'each spring are normally held away from plate 21. 50

plane. A 'l The alternative shown ln Figs. 8 and 9 is 'the I Fig. 9 is a fragmental section taken along the same as that of Figs. 5, 6, and 'lexcept that plate line 9-9 of Fig. 8. Y 28, which is the equivalent of plate III, Fig. Lhas.

The friction 'member comprises a plate Il), slots 29 therein giving rise to spokes 30. Spokes allow the spring 25 located between them to bow -45I Figs. 1, .2. 3, and 4, having slots II therein, 30 differ from spokeslz of Fig. 1, in that they are 55 all substantially in the same axial location instead of being offset from each other in two sets.

The advantage of having a number of waves or bends in the legs of the springs is that there is bearing with a friction facing at several places alongsuch legs, reducing thereby the wear on the facing. The heads of the springs illustrated, curve out beyond the faces of plates I0, 21 or 28. Such shaped heads are the stifl'est part of the springs, so that if they cameunder the facings, they would cause undue wearon' ythe facings. In

order to obviate this, the heads are passed through openings to one side of the facings. Keeping the heads to one side, also increases the effective length of the spring. Of course it can be readily understood that other shaped heads than those shown may be used. In the claims, the term hair-pin is-,applied to the springs with the understanding, however, that the legs of the springs have substantial width.

, I claimz- 1. A driven member for friction clutches comprising a disc having two sets of spokes, the

spokes of a set being in substantially axial alignment with` each other but out of axial alignment with the spokes of the other set, a friction facing fastened to each set, the facing fastened to one set being unattached to the other set,

l and hair-pin springs having legs located between the facings and the spokes fornormally holding each facing away from the spokes of the set to which it is unattached, each spring having its head passing through an-opening in said disc, said opening being beyond the facings. v 2. A driven member for friction clutches in cluding a support having friction facings on both sides of said support, spaced means for fastening said facings to said support at intervals,'and

.hair-pin springs inthe intervals between thev fastening means,the legs of the. springs coming ,between the facings and said support on each side 4. A drivenmember,forfriction clutchesin' cluding a suppcrtha'vin'g friction facings-on each side oi` said supportandfastened thereto, and springs located atintervals around said support, each spring havinga pair of legs joined together bya head at one` end, the legs of each spring being on opposite sides of said support, with said legs coming between the facings and said support, the heads of the-springs passing through openings provided in said support facings. v i

5. A driven member for lfriction clutches comprising a disc havingtwo sets of spokes, the spokes of a setbeingfin substantially axial alignment with each other butoutof axial: alignment with the spokes of theV other ,set,.a friction 'facing fastened to each set, the facin'gqfastened to one set being unattachedto-the other set,iand hair-pin springs havingftheir legs located bebeyond said tween the facings and the-spokes, one'leg of each spring being bowed,l said-:bowedlegibelng between a spoke and the facing to which `it is f -ing through an opening in saiddisc.

12. Ak driven member for friction clutchesc'omfprising a disc having 'friction facings on-`each' unattached for normally holding each facing away from the spokes of the set to which it is unattached, the heads of the springs passing through openings provided in said disc beyond said facings.

6. A driven member for friction clutches comprising a disc having two sets of spokes, the spokes of a set being in substantially axial alignment with each other but out of axial alignment with the spokes ofthe othery set, a friction facing fastened to each set, the facing-fastened to one set being unattached to the other set, and hairpin springs having their legs located between the facings and the spokes, one leg of each spring being wavy shaped, said wavy shaped leg being between a spoke and the facing to which it is unattached for normally holding each facing away from the spokes of the set to which it is unattached, the heads' of the springs passing through openings provided in said disc.

,7. A driven member for friction clutches comprising a disc having friction facings on each side of said disc and fastened thereto, and springs located at intervals aroundsaid disc,- each spring having a pair of legs joined together by a head' at one end, the legs of each spring being on opposite sides of saiddisc, with said legs coming between the facings and said disc, the heads of the springs passing through openings insaid disc, and at least one leg of each spring being ywavy shaped.

8. A driven member for friction clutches, as claimed in claim 7, in which the free end o f the wavy shaped leg extends away from the'face of the disc, the friction facing adjacent the wavy leg having ,a recess to accommodate said leg, the outer edgeof said recess being spaced radially inward from the outer edge of the facing, the free end of said leg coming inside the recess.

9. A driven member for friction clutches as claimed in claim 7, in which the disc comes in between the free ends of the legs, the free end of the wavy shaped leg extending towards the face of the disc.

10. A driven member for friction clutches comprising a disc having friction facings on each side of said disc and fastened thereto, and hair--- pin springs located at intervals around said disc.,

the legs of each spring being on opposite sides of said disc and coming between the facings and said disc, the heads of the springs passing through openings provided in said disc beyond said facings, the latter being. recessed to accommodatethe legs ofthe springs. l

l 11. Adriven memberfor frictionclutches com# prlsing a disc having friction facings on each side of said disc and fastened thereto, and springs located at intervals around said Adisc,

each spring having a pair`of legs joined togetherI at -one end lthe, legsI of I each ,spring being ,wavy

shaped and oniopposite" sides of the disc,`saidlegs coming between `the facings andthe disc,- kthe junction of the legs of each of said springs passside 1 of said ldiscanci fastened thereto,`-and hair-pin` springs located at intervals .around said rounded and passing throughl openings provided ,in thedisc. berend. Seidyfaclngs. Y

y 13.,A driven memberlfor frictionvclutches v comprislng a disc having frictionfacings on 75 side of said disc and fastened thereto, and hair-pin springs located at intervals around said disc, the legs of each spring being on opposite sides of said disc and coming between the facings and said disc, said legs at their free ends being separated by said support, the heads of the springs passing through substantially oblong openings provided in the disc, the 'length of said openings extending substantially circumferen-v n r spaced pairs for fastening the facings to the disc, the rivets of a pair being disposed radially from eachother, the outer rivet of each pair being near the outer edge of the facings and the inner rivet of each pair being near the inner edge lof the facings, and hair-pin springs located between the pairs of rivets, the legs of the springs being on oppositefsides of said disc and coming between the facings and the disc, the heads of the springs passing through openings provided in the disc, at least one leg of each spring being wavy shaped, said leg extending radially for substantially the Width of the facings.

15. A driven member for friction clutches comprising a disc having peripheral spokes, friction facings on each side of said spokes and fastened thereto, and hair-pin springs located on the spokes, the legs of the springs being on opposite faces of the spokes, said springsgextending substantially radially and oo ming between the facings and the spokes-, the heads of the springs MORRIS KATCHER.

passing through openings provided inthe disc. 20 

